What is the meaning of the testimony that there is no god but Allah and that Muhammad is the Messenger of Allah?

The meaning of the testimony "there is no god but Allah" is the negation of the right to worship for anything other than Allah and its affirmation for Him alone, without any partner. So its meaning is: there is no true god but Allah. And the meaning of the testimony "that Muhammad is the Messenger of Allah" is the firm belief that he is His servant and His messenger to all creation. Therefore, one must believe him in what he has conveyed, obey his commands, avoid his prohibitions, follow his law, and know that obedience to him is obedience to Allah. A servant does not enter the religion except with these two inseparable testimonies.